On Tue, Mar 07, 2017 at 12:44:59AM +0200, Siarhei Siamashka wrote: > Hi Tom, > > On Mon, 6 Mar 2017 13:50:10 -0500 > Tom Rini <[email protected]> wrote: > > > Today, we have cases where we wish to build all of U-Boot in Thumb2 mode for > > various reasons. We also have cases where we only build SPL in Thumb2 mode > > due > > to size constraints and wish to build the rest of the system in ARM mode. > > Is there a good real world example of this particular use case? Even if > there is enough space for having the U-Boot binary built in ARM mode, > Thumb2 is still smaller and loads faster. And having reduced boot time > is always nice.
So, good question. At the moment, I'm not trying to change existing behavior. I also seem to recall that Thumb2 being a performance win depends on what you're doing. It would certainly be worth doing some tests to see if on say Allwinner where today we don't do the main U-Boot in Thumb2 mode there is a noticable change as it looked like a pretty big size win. -- Tom
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